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Leucos aula (Bonaparte, 1841)

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Leucos aula
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Italy country information

Common names: Triotto
Occurrence: native
Salinity: freshwater
Abundance: occasional (usually not seen) | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Occurs only in the Padua-Venetian regions. It has been transplanted from north to central Italy since historical times. It is now dominant in several central Italian lakes.Trans-introductions have hidden its original distribution in rivers on the Adriatic slope. Abundant locally in the Padua-Venetian regions to the extent of being a pest (Ref. 12291). Has been stocked unintentionally in the Ombrone river (Ref. 45688). Has caused the extinction of Sarmarutilus rubilio in central and southern Italian lakes and rivers (Ref. 96829). Also Ref. 26100, 27118, 94493.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/it.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Bianco, P.G., 1995
National Database: ICTIMED

Common names from other countries

Classification / Names Κοινά ονόματα | Συνώνυμα | Catalog of Fishes(Γένος, Είδη) | ITIS | CoL | WoRMS | Cloffa

> Cypriniformes (Carps) > Leuciscidae (Minnows) > Leuciscinae
Etymology:   More on author: Bonaparte.

Environment: milieu / climate zone / depth range / distribution range Οικολογία

; Γλυκού νερού βενθοπελαγικό; pH range: 7.2 - 8.0; dH range: 12 - 25.   Temperate; 8°C - 24°C (Ref. 12468)

Κατανομή Χώρες | Περιοχές FAO | Οικοσυστήματα | Παρουσίες | Point map | Εισαγωγές | Faunafri

Europe: Adriatic basin from Soca to Po drainages (Italy, Switzerland, Slovenia) and small coastal streams at Zadar, Croatia. Widely introduced in Italy.

Μέγεθος / Βάρος / Age

Maturity: Lm ?  range ? - ? cm
Max length : 26.0 cm TL αρσενικό/απροσδιόριστο; (Ref. 117028); μεγ. αναφερόμενη ηλικία: 7 έτη (Ref. 59043)

Short description Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία

Μαλακές ραχιαίες ακτίνες (συνολικά) : 12; Μαλακές εδρικές ακτίνες: 12. Leucos aula is distinguished from all congeners by having a middle lateral band and a smaller head length, which in fish of comparable size is less than 4.5 times in the SL, except L. panosi, and more than 4.0 times in the others species. It further differs by having 12 modal scales around caudal peduncle (vs. 14) (Ref. 96829). It can be diagnosed from its congeners in Apennine Peninsula by having the following characters: dorsal and anal fins with 9½ branched rays; 36-42 (usually 38-39) scales along lateral line; mouth subterminal; pelvic, pectoral and anal fins greyish; eye red in life; conspicuous dark brown midlateral stripe from eye to caudal fin base (Ref. 59043).

Βιολογία     Γλωσσάρι (π.χ. epibenthic)

Found in canals, swamps, lakes and streams with slow current and dense vegetation (Ref. 59043). Prefers to inhabit lakes and still waters of rivers; does not thrive in moderately to fast flowing rivers (Ref. 96829). Lives in groups. Omnivorous, feeding mainly on insect larvae, other invertebrates, algae and aquatic macrophytes. Spawns in small groups composed of one female and several males. Deposits eggs on aquatic vegetation (Ref. 59043). Age at first maturity is 1+ or 2+ for males and 2+ for females; maximum age observed is 7+ years (Ref. 96829). Abundant, but locally declining due to the introduction of Carassius gibelio, Ctenopharyngodon idella and Silurus glanis ( in lakes). There are introduced populations locally responsible for extirpation of Rutilus rubilio (Ref. 59043).

Life cycle and mating behavior Maturities | Αναπαραγωγή | Spawnings | Egg(s) | Fecundities | Προνύμφες

Main reference Upload your references | Αναφορές | Συντονιστής | Συνεργάτες

Bianco, P.G. and V. Ketmaier, 2014. A revision of the Rutilus complex from Mediterranean Europe with description of a new genus, Sarmarutilus, and a new species, Rutilus stoumboudae (Teleostei: Cyprinidae). Zootaxa 3481(3):379-402. (Ref. 96829)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 05 March 2010

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

αλιεία: χωρίς ενδιαφέρον; αλιεία αναψυχής: ναί
FAO(Publication : search) | FishSource |

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Διαδικτυακές πηγές

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5312   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00724 (0.00358 - 0.01465), b=3.14 (2.98 - 3.30), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Τροφικό Επίπεδο (Ref. 69278):  2.8   ±0.30 se; based on food items.
Ελαστικότητα (Ref. 120179):  Μεσαίο(α), ελάχιστος χρόνος για διπλασιασμό πληθυσμού 1,4 - 4,4 έτη (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (16 of 100).